Carbureter for internal-combustion engines.



G. GONSTANTINESGU. CARBURETER PoR INTERNAL ooMBUsTloN ENGINES. APPLICATION FILED AUG. 21. 1911.

1,021,039. Patented Mar. 26, 1912.

UNITED PATENT OFFICE.

`GOGiU' CONSTANTINESCU, 0F BLOOMSBURY, LONDON, ENGLAND.

CARBURETER FOR INTERNALCOMBUSTION ENGINES.

1 ,oei ,039.

Specification of Letters Patent.

Application filed August 21 1911. Serial No. 645,250.

- REISSUED To all 'whom'. it 'may concern Be it known that I, Geen CONSTAN- TINnsoU, a subject of the King of Roumanie, .residing at Bloomsbury, London, in England, have invented certain new and useful Improvements in Carbureters for Internal- Combustion Engines, of which the following is a specification.

The present invention consists in improvements in surface carbureters wherein ear-A bureting takes place in a chamber surround` ing a horizontal exhaust gas conduit, the fuel bein fed into said chamber from a perforate feed pipe and said chamber containing heat conducting bodies or masses. I have described such carbureter in the s ecication filed with my co-pending app ication Serial No. 642,244'.

The object of the present invention is to effect certain structural improvements in the apparatus in regard to the arrangement. of the air and fuel inlets.

The invention is illustrated in the aecompanying drawing, in which:-

Figure 1 is a longitudinal section of the carbureter; Fig. 2 an end-view thereof; Fig. 3 a section on the line A-B of Fig. l; Fig. 4 a half cross section of the carbureting chamber, illustrating a modification, and Fig. 5 a` half cross section of said chamber,

illustrating another modification.

As shown in Fig. 1, l have, in my present invention, placed both the fuel feed and the air inlet at that end of the carbureter at which the exhaust gases enter the apparatus, the fuel feed chamber g being fixed to the covert) which has the port for entrance of the said gases. '.lhe feed pipe f passes into the upper part of the annular chamber r1 between the horizont-al cylinders a. and c, whereof the former receives the influx of exhaust gases.

ln' the'construction shown in Fig. 3 the chamber q is filled, as described in my prior specification cited. with lumps or fragments ot' heat. conducting material b, for example copper or iron, onto which the fuel tricklcs from the lateral perforationsin the horizontal part of the pipe f. I find it important to have the under part of this horizontal pipe iniperforate as otherwise too' much of the fuel runs out at the inlet end and there is no uniform distribution along the length 'of the annular carbureting chamber. Vithin the annular chamber the pipe is sur-. rounded by a perforated pipe Z. The

nodules l. are supported at the ends vof the chamber by perforated rings o. i

In the modification shown in Fig. 4, l substitute foi-'the fragments or lumps l), metal rods b. of approximately rectangular cross section, spaced apart and extending through thechanibcr f/ parallel with the axis of the chamber r] so as to leave small clearance for the passage of fuel between their inner and outer faces and the walls of the chamber. In the modification shown in Fig. 5 I use cylindrical metal rods L arranget'l in contact with each other; these rods may, if desired, be made tubular, for .saving of weight. The function of the rods b and 71 like that of the nodules .is on the one hand to afford a large evaporating surface, and on the other hand to act as a heat. accumulator which will assist in furnishing heat; while tla.` engine is ruiming below normal speed, and will enable the carburetor to .start work again, without auxiliary heating, after a lengthy stoppage of the engine.

According to my present invention the ofthe carburetor, and for this purpose the apparatus illustrated has an air pipe lc which passes through the cover e into the carbnreting chamber, and through the said chamber toward the right hand end, where it terminates in the annular space inelosed by the joined ends of the cylinders (L and c, These cylinders consist of sections of tubing, the ends of which are joined by a lap joint. The air issuing from the pipe le is sucked through the interstices between the fragments` or nodules or through the spaces between the rods b1 or 7) and passes ont of the apparatus throifgh the pipe The exhaust gases take the zig-zag path indicatedin the drawing by arrows, and by this means the exhaust is silenced. Tn order to form the said zig-zag path a hollow cylinder w open at the left land end and closed at the right. hand end is disposed between the cylinder 0 and tlie outer casing y.

The. disposition of the air and fuel inlet, as described in my present` specification, eliminates the connections between the carwof the apparatus. and thus leaves at this part a clearer-'passage for the exhaust gases. The arrangement. ofthe air pipe in the carbureting chamber also insures effective heating of the air prior to earbureting. The

air inlet also takes place at the suction end cylinder a.' These rods fit loosely into the bnretingchamhcr and the right hand cover joint between the tWo Cylinders i and Z) can easily be made so tight, by soldering or brazing,as to obviate risk of exhaust gases entering the oarbureting chamber. l may use a plurality, of air pipes traversing the said chamber, if the size of the apparatus renders subdivision of the air supply desirable.

Another .advantage of disposing the fuel inlet and air vinlet at the same end as the eX- haust inlet lies in the fact that the structure can be so made as to allow of free expansion thereof, in all its parts,.in one axial direcwith interstices between them adequate forr the passage of the air to be carbureted, a horizontal perforated fuel feed pipe extending into said chamber so as to afford a series of fuel delivery orifices distributed along the length of the chamber, and an air pipe extending into said chamber and terminating with its delivery orifice near said closed end of the chamber, the inlets of air,

fuel and exhaust gas being` all at the opposite end'of the apparatus.

f2. A carburetor comprising a horizontal motor exhaust conduit, a oarbureting cha-mber surroundingr said conduit and closed, at one end, by junction of its wall to the wall of said conduit, non-absorbent heat Conducting bodies disposed. in said chamber with interstices between them adequate for the passage of the air to be earbureted, a hori` Zontal perforated fuel feed pipe extending into said chamber so as to atl'ord a series of fuel delivery orifices distributed along the length of the ehambor7 an air pipe extending into said chamber and terminating withl its delivery orifice near said Closed end of the chamber, the .inlets of air, fuel and eX- haust gas being all at the opposite end of the apparatus, an external easing, and a hollow cylinder closed at one end and Open at the other interposed between said easing and said earbureting' chamber so that the eX- haust gases must take a zig-zag path from lthe exhaust conduit througli the said cylinder and then through the casing.

In witness whereof I have signed this specification in the presence of two Witnesses.

eeen ooNsTANriNnseU.

Witnesses: i

A. J. HADDAN,

E. HAMr'roN. 

